"Yes – elevator shaft fuse" is not recognised as a Boolean (true/false) value.

Map of Energy Flow Systems

Energy Flow Systems is a level in Keen 5. It contains one of the four machines that Keen has to destroy in order to access the elevator.

This level is particularly notable for the presence of Robo Reds on TV screens in many of the rooms. There is only one real Robo Red, though, in the room just below the start, and it appears in all difficulty levels. Other enemies in this level include Sparkies, Little Amptons, a Shikadi (normal and hard modes), and a Shockshund (in hard mode only).

At the bottom of the level, there is a pit filled with fire helices, indicated by a do-not-enter sign at the entrance. If Keen is brave enough to enter it with help of a floating platform, many hidden goodies are waiting for him.

Keen must also destroy the machine's two fuses in the final room in order to complete the level, by pogoing on them. The machine itself does contain several energy-looking tubes, probably related to its purpose of regulating the flow of energy through the Omegamatic.